During the past three weeks, police have received reports of seven similar incidents across the city.
The carparks targeted include the Range on Water lane, Southernhay east, Waitrose and Sainsburys on Alphington Road.
A smartly dressed man is targeting lone older women and men, pretending he needs change for the ticket machine.
So far, around one-thousand pounds has been stolen.
Exmouth is getting Budleigh Salterton's sewage
But is the current taking it back again?
Will Devon be ruled by a mayor?
Politicians working to make it happen
City win keeps them above the drop-zone
Late winner boosts survival hopes
Lib Dems now top dogs in Torridge
But they're not pushing to take over
156 women a year die of preventable causes in Plymouth
But women outlive men
Victim left with facial injuries in Tavistock assault
Teenagers arrested
